Soft Caterpillar 5667040-00. C280-12 DUAL ECM DEP 50hz 1000RPM 3700bkw,BRNo. 36350,WO 46903,CEAL_T4F_BETA_2.14.1, CE_T4F_PROD_1.5.2, BE_T4F_PROD_1.5.2, DEC 17 2018 C280 Tier 2 Engine Software